Mobile speaker grille



FIG. 1 is a top view of a speaker grille for a mobile radio showing our new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view which is a mirror image of the left side elevational view; and,

FIG. 4 is an isometric view.

The broken lines in FIGS. 1 and 3 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mobile speaker grille, as shown and described. 